Add batch of unary functions (#63050)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/63050
Test Plan: Imported from OSS
Reviewed By: priyaramani, astaff
Differential Revision: D30347513
Pulled By: eellison
fbshipit-source-id: abaf641778671d17df87a2b7b47bad7501a91b5a
